1998 Chevrolet Silverado Z71 P0435: Bank 2 O2 Sensor Location and Code Persistence Explained
I recently received a diagnostic code P0435 on my 1998 Chevrolet Silverado Z71. AutoZone confirmed that the issue is related to the oxygen sensor in bank 2, located on the passenger side near the rear of the catalytic converter. Is this accurate? I have reset the code, and while the service engine light has turned off, I haven't driven the truck since—only running it at idle. What should I expect regarding this fault code and its behavior after a reset?
The P0435 code is correctly associated with bank 2 oxygen sensor malfunction on the passenger side. However, it's important to verify that the sensor is indeed faulty or if the issue could be related to downstream sensor performance or exhaust system leaks. A reset alone does not resolve the underlying problem—driving under real conditions is essential for accurate diagnosis.